8642147520 has 112 divisors (see below), whose sum is σ = 27477646848. Its totient is φ = 2301312000.

The previous prime is 8642147483. The next prime is 8642147531. The reversal of 8642147520 is 257412468.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714967 + ... + 726953.

Almost surely, 2^8642147520 is an apocalyptic number.

8642147520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8642147520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13738823424).

8642147520 is an abundant number, since it is smaller than the sum of its proper divisors (18835499328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8642147520 is a wasteful number, since it uses less digits than its factorization.

8642147520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12758 (or 12748 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 8642147520 is about 92963.1514095773. The cubic root of 8642147520 is about 2052.1411315369.

Adding to 8642147520 its reverse (257412468), we get a palindrome (8899559988).

The spelling of 8642147520 in words is "eight billion, six hundred forty-two million, one hundred forty-seven thousand, five hundred twenty".